疾风劲草

Explanation: In the fierce winds, only the tough grass that would not be uprooted. Only after a severe test analogy, I know who really strong. 　　Source: "East View of Han Ji Chuan and hegemony": "Yingchuan by key from my death, and the child left alone, before testing of the wind Supergrass." 　　Examples: Depicting the Formidable was sharp, or its people, ~, Suihan party experience. ("Zhou Shu Chuan Pei W") Thesaurus:  Strong winds test the sturdiness of grass., Raging flames Gold, Lu yao to know Horse, time reveals a person’ s heart